<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        [v-cloak]{
            display: none;
        }
    </style>
</head>
<body>
<h1>微博首页</h1>
<div id="app">
    <div v-cloak v-if="user!=''">欢迎{{user.nick}}回来！<img :src="user.url" width="50" height="50">
        <a href="#" @click="logout()">退出登录</a>
        <a href="/send.html">发布微博</a>
        <a href="/myweibo.html">我的微博</a>
    </div>
    <div v-cloak v-if="user==''">
        <a href="/reg.html">注册</a>
        <a href="/login.html">登录</a>
    </div>
    <hr>
    <!--遍历生成所有微博内容-->
    <div v-for="weibo in arr">
        <h3><a :href="'/detail.html?id='+weibo.id">{{weibo.author}}说：{{weibo.content}}</a></h3>
        <img :src="weibo.url" width="200" alt="">
    </div>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script>
    let vm =new Vue({
        el:"#app",
        data:{
            user:"", //页面得到服务器返回数据之前应认为未登录
            arr:[]
            },
        created:function () {
            //发送请求得到登录的用户信息
            axios.get("/checklogin").then(function (response) {
                //如果没登陆得到的是一个空字符串，登录过得到的是一个对象
                vm.user=response.data;
            })
            //发送请求获取所有微博数据
            axios.get("/select").then(function (response) {
                vm.arr=response.data;

            })
        },
        methods:{
            logout:function () {
                if (confirm("您确定退出登录吗？")){
                    axios.get("/logout").then(function () {
                        location.reload();
                    })
                }

            }
        }
    })
</script>

</body>
</html>